cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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hinic_common.c (1463B)

      1// SPDX-License-Identifier: GPL-2.0-only
      2/*
      3 * Huawei HiNIC PCI Express Linux driver
      4 * Copyright(c) 2017 Huawei Technologies Co., Ltd
      5 */
      6
      7#include <linux/kernel.h>
      8#include <linux/types.h>
      9#include <asm/byteorder.h>
     10
     11#include "hinic_common.h"
     12
     13/**
     14 * hinic_cpu_to_be32 - convert data to big endian 32 bit format
     15 * @data: the data to convert
     16 * @len: length of data to convert
     17 **/
     18void hinic_cpu_to_be32(void *data, int len)
     19{
     20	u32 *mem = data;
     21	int i;
     22
     23	len = len / sizeof(u32);
     24
     25	for (i = 0; i < len; i++) {
     26		*mem = cpu_to_be32(*mem);
     27		mem++;
     28	}
     29}
     30
     31/**
     32 * hinic_be32_to_cpu - convert data from big endian 32 bit format
     33 * @data: the data to convert
     34 * @len: length of data to convert
     35 **/
     36void hinic_be32_to_cpu(void *data, int len)
     37{
     38	u32 *mem = data;
     39	int i;
     40
     41	len = len / sizeof(u32);
     42
     43	for (i = 0; i < len; i++) {
     44		*mem = be32_to_cpu(*mem);
     45		mem++;
     46	}
     47}
     48
     49/**
     50 * hinic_set_sge - set dma area in scatter gather entry
     51 * @sge: scatter gather entry
     52 * @addr: dma address
     53 * @len: length of relevant data in the dma address
     54 **/
     55void hinic_set_sge(struct hinic_sge *sge, dma_addr_t addr, int len)
     56{
     57	sge->hi_addr = upper_32_bits(addr);
     58	sge->lo_addr = lower_32_bits(addr);
     59	sge->len  = len;
     60}
     61
     62/**
     63 * hinic_sge_to_dma - get dma address from scatter gather entry
     64 * @sge: scatter gather entry
     65 *
     66 * Return dma address of sg entry
     67 **/
     68dma_addr_t hinic_sge_to_dma(struct hinic_sge *sge)
     69{
     70	return (dma_addr_t)((((u64)sge->hi_addr) << 32) | sge->lo_addr);
     71}